.header {
    width: 100%;
    height: 80px;
    background: #fff;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 2;
    transition: all .3s linear;
}

.head_main {
    min-width: 1200px;
    width: 80%;
    height: 100%;
    margin: auto;
    position: relative;
}

.head_main .head_logo {
    width: 218px;
    height: 62px;
    background: url(../images/logo.png) no-repeat center center;
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    margin: auto;
    cursor: pointer;
}

.head_main .headerMenu {
    float: right;
    margin-top: 20px;
}

.head_main .headerMenu li {
    float: left;
}

.head_main .headerMenu li>a {
    display: block;
    padding: 0 20px;
    height: 40px;
    line-height: 40px;
    margin: 0 5px;
    font-size: 13px;
    border-radius: 20px;
}

.head_main .headerMenu li>a:hover {
    background: #2b2b2b;
    color: #fff;
}

.index_part1 {
    margin-top: 80px;
}

.index_part1 .hd {
    overflow: hidden;
    position: absolute;
    bottom: 10px;
    width: 100%;
    text-align: center;
    z-index: 1;
}

.index_part1 .hd ul {
    overflow: hidden;
    zoom: 1;
}

.index_part1 .hd ul li {
    display: inline-block;
    margin-right: 5px;
    width: 48px;
    height: 4px;
    background-color: #fff;
    cursor: pointer;
}

.index_part1 .hd ul li.on {
    background-color: lightpink;
}

.index_part1 .bg img {
    width: 100%;
}

.index_part1 .prev, .index_part1 .next {
    display: block;
    position: absolute;
    top: 50%;
    left: 3%;
    /* margin-top: -20px; */
    transform: translateY(-50%);
    width: 32px;
    height: 40px;
    color: #fff;
    /* font-size: 60px; */
    /* font-weight: bold; */
    opacity: .5;
}

.index_part1 .prev i, .index_part1 .next i {
    font-size: 40px;
}

.index_part1 .prev {
    /* transform: rotate(1.2); */
    transform: rotate(180deg);
}

.index_part1 .next {
    left: auto;
    right: 3%;
}

.index_part1 .prev:hover, .index_part1 .next:hover {
    opacity: 1;
}

.index_part1 .bg .banner_gif {
    position: absolute;
    top: 0;
}

.index_part2 {
    height: 500px;
}

.index_part2_title {
    position: relative;
    top: 50px;
    text-align: center;
    font-size: 22px;
    font-weight: 800;
}

.index_part2_title::after {
    content: "- ADVANTAGE -";
    font-size: 12px;
    font-weight: 400;
    color: rgb(151, 151, 151);
}

.index_part_2_info {
    float: left;
    width: 50%;
    height: 500px;
    position: relative;
}

.index_part2_ctn .index_part_2_info:first-of-type {
    animation: run 2s 1 linear;
}

.index_part_2_info a {
    display: block;
    width: 260px;
    height: 260px;
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    margin: auto;
}

.index_part_2_info a img {
    display: block;
    margin: auto;
    margin-bottom: 30px;
}

.index_part_2_info a h3 {
    padding: 0 20px;
    line-height: 40px;
    position: relative;
    font-size: 15px;
    margin-bottom: 15px;
    border-width: 3px;
    color: #3685F2;
    border-bottom: 3px solid #e5e5e5;
}

.index_part_2_info a h3::after {
    content: "";
    display: block;
    height: 3px;
    width: 25px;
    background-color: #3685F2;
    position: absolute;
    bottom: -3px;
    left: 0;
}

.index_part_2_info a p {
    line-height: 24px;
    font-size: 14px;
    color: #a6a6a6;
}

.index_part3 {
    height: 680px;
    background-color: #D7F0F9;
}

.index_part3>a {
    display: block;
    height: 45px;
    width: 150px;
    background: #fff;
    border: 1px solid #d2d2d2;
    text-align: center;
    line-height: 45px;
    margin: 0 auto;
}

.index_part3>a:hover {
    background: #e0e0e0;
}

.index_part3_title {
    position: relative;
    top: 30px;
    text-align: center;
    font-size: 22px;
    font-weight: 800;
}

.title_underInfo {
    width: 100px;
    border-bottom: 1px solid #a6a6a6;
    position: relative;
    margin: auto;
    margin-top: 15px;
}

.title_underInfo::after {
    content: "CASE";
    position: absolute;
    padding: 0 10px;
    font-size: 12px;
    transform: translate(-50%, -7px);
    background-color: #D7F0F9;
    color: #a6a6a6;
    font-weight: 400;
}

.index_part3_main {
    margin: 80px auto 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    /* width: 1020px; */
    height: 373px;
    transition: all 0.5s;
}

.index_part3_main li {
    width: 170px;
    height: 100%;
    float: left;
    position: relative;
    overflow: hidden;
    transition: .5s;
}

.index_part3_main .w {
    width: 500px;
}

.index_part3_img {
    width: 100%;
    height: 100%;
    cursor: pointer;
    background-repeat: no-repeat;
    background-position: center center;
    /* background-size: 100%; */
    background-color: #D7F0F9;
}

.index_part3_detail {
    width: 100%;
    background-color: #E96809;
    height: 100%;
    position: absolute;
    top: 100%;
    padding: 50px 0;
    color: #fff;
    text-align: center;
    transition: .3s;
}

.index_part3_detail.on {
    top: 0;
}

.index_part3_detail>h3 {
    border-bottom-color: #F7A548;
    font-size: 24px;
    line-height: 40px;
    font-weight: normal;
}

.index_part3_detail>p {
    padding: 30px 0;
    line-height: 22px;
    text-align: left;
    margin: auto;
    min-width: 170px;
    width: calc(100% - 120px);
}

.index_part3_detail>a {
    display: block;
    width: 166px;
    height: 60px;
    background: #fff;
    color: #e96809;
    border-radius: 5px;
    line-height: 60px;
    margin: auto;
}

.index_part4 {
    height: 680px;
    background-color: #fff;
}

.index_part4>a {
    display: block;
    width: 150px;
    height: 45px;
    line-height: 45px;
    text-align: center;
    background: #fff;
    border: 1px solid #d2d2d2;
    margin: 0 auto;
}

.index_part4_title {
    position: relative;
    top: 50px;
    text-align: center;
    font-size: 22px;
    font-weight: 800;
}

.index_part4_unde {
    width: 100px;
    border-bottom: 1px solid #a6a6a6;
    position: rlative;
    margin: auto;
    margin-top: 15px;
}

.index_part4_unde::after {
    content: "NEWS";
    position: absolute;
    padding: 0 10px;
    font-size: 12px;
    transform: translate(-50%, -7px);
    background-color: #fff;
    color: #a6a6a6;
    font-weight: 400;
}

.index_part4>a:hover {
    background: #d2d2d2;
}

.index_part4_main {
    width: 80%;
    height: 355.75px;
    margin: 100px auto 40px;
}

.index_part4_main_r {
    float: left;
    width: 50%;
    height: 100%;
    padding-right: 15px;
}

.index_part4_main_r a {
    position: relative;
    display: block;
    width: 100%;
    height: 100%;
}

.index_part4_main_r img {
    display: block;
    width: 100%;
    height: 100%;
}

.index_part4_info {
    width: 100%;
    height: 90px;
    line-height: 20px;
    position: absolute;
    bottom: 0;
    left: 0;
    color: #fff;
    padding: 20px;
    background: rgba(0, 0, 0, .3);
}

.index_part4_main_l {
    float: right;
    height: 100%;
    width: 50%;
    padding-left: 15px;
}

.index_part4_main_l>a {
    float: left;
    display: block;
    height: 177px;
    width: 271px;
    position: relative;
    /* padding: 0 5px; */
    /* margin: 0 5px 10px 5px; */
}

.index_part4_main_l>a img {
    display: block;
    width: 100%;
    height: 100%;
}

.index_part5 {
    color: #fff;
    background-color: #1D2C4B;
    padding: 80px 0;
}

.index_part5_title {
    position: relative;
    top: 50px;
    text-align: center;
    font-size: 22px;
    font-weight: 800;
}

.index_part5_unde {
    width: 100px;
    border-bottom: 1px solid #a6a6a6;
    position: rlative;
    margin: auto;
    margin-top: 15px;
}

.index_part5_unde::after {
    content: "PRODUCT";
    position: absolute;
    padding: 0 10px;
    font-size: 12px;
    transform: translate(-50%, -7px);
    background-color: #1D2C4B;
    color: #a6a6a6;
    font-weight: 400;
}

.index_part5_main {
    width: 80%;
    height: 620px;
    min-width: 1320px;
    margin: auto;
    padding-top: 50px;
}

.index_part5_main_L {
    width: 420px;
    float: left;
}

.index_part5_main_L a {
    display: block;
    height: 590px;
    width: 397px;
    cursor: pointer;
    background: url(../images/histron.png) no-repeat center center;
}

.index_part5_main_R {
    margin-left: 420px;
    position: relative;
    height: 590px;
}

.index_part5_RTab {
    position: relative;
    height: 46px;
}

.index_part5_RTab:before {
    content: "";
    height: 1px;
    width: 100%;
    background: linear-gradient(to right, #B9C2C9, #253453);
    position: absolute;
    bottom: 0;
    left: 0;
}

.index_part5_RCtn {
    padding: 60px 0 0;
}

.index_part5_RCtn .card_all {
    float: left;
    position: relative;
    width: 282px;
    height: 390px;
    background-image: url(../images/produceAll.jpg);
    width: 846px;
    margin-left: 20px;
}

.index_part5_RCtn li:hover {
    border: 1px solid #206AC9;
    box-shadow: 0 0 10px 1px rgb(255 255 255 / 30%);
}

.index_part5_RCtn li:hover a {
    border-color: #122d5a;
    background-color: #122d5a;
}

.index_part5_RCtn li a {
    display: inline-block;
    position: absolute;
    height: 46px;
    line-height: 45px;
    width: 110px;
    text-align: center;
    color: #fff;
    border: 1px solid #fff;
    cursor: pointer;
    font-size: 16px;
    bottom: 40px;
    left: 0;
    right: 0;
    margin: auto;
}

.index_part6 {
    padding: 80px 0;
}

.index_part6_title {
    text-align: center;
    margin: auto;
}

.index_part6_title h3 {
    line-height: 32px;
    font-weight: bold;
    font-size: 20px;
}

.index_part6_und {
    width: 100px;
    border-bottom: 1px solid #a6a6a6;
    position: relative;
    margin: auto;
    margin-top: 10px;
}

.index_part6_und::after {
    /* 自定义属性 */
    content: attr(data-underinfo);
    position: absolute;
    padding: 0 10px;
    font-size: 12px;
    transform: translate(-50%, -7px);
    background-color: #fff;
    color: #a6a6a6
}

.index_part6_partent {
    text-align: center;
    padding: 30px 0;
    color: #a6a6a6;
}

.index_part6_partent span {
    margin: 0 10px;
    font-size: 14px;
}

.partentLogo {
    width: 80%;
    margin: 0 auto;
}

.partentLogo ul {
    width: 100%;
}

/* .partentLogo ul li {
    float: left;
    width: 20%;
    height: 75px;
    text-align: center;
    margin-bottom: 30px;
} */

.partentLogo ul li {
    width: 160px;
    height: 70px;
    background-color: #f7f7f7;
    border-radius: 3px;
    transform: skewX( -20deg);
    position: relative;
    overflow: hidden;
    margin-top: 20px;
    margin-left: 50px;
    float: left;
}

.partentLogo ul li img {
    position: absolute;
    top: 0px;
    bottom: 0;
    left: 0;
    right: 0;
    margin: auto;
    transform: skewX(20deg);
}

.footer {
    background-color: #20252B;
    padding: 75px 0 20px;
}

.footer_main {
    width: 80%;
    min-width: 1200px;
    position: relative;
    margin: auto;
}

.footer_main::before {
    content: "";
    display: block;
    width: 100%;
    height: 1px;
    background: #616262;
}

.footerMenu {
    margin-top: 10px;
    padding: 5px 10px 0;
}

.footerMenu li {
    width: 88px;
    float: left;
}

.footerMenu>li:last-of-type {
    width: 230px;
    text-align: center;
}

.footerMenu>li:last-of-type ul {
    padding: 0 5px;
}

.footerMenu>li:last-of-type ul li {
    width: 50%
}

.footerMenu>li:last-of-type ul li a {
    display: block;
    line-height: 36px;
    color: #fff;
    background-color: #2A4884;
    cursor: pointer;
    width: 100px;
    text-align: center;
    margin: 5px;
}

.footerMenu li a {
    color: #fff;
    line-height: 30px;
    font-size: 14px;
    font-weight: 800;
}

.footerMenu .footer_select a {
    display: block;
    line-height: 28px;
    color: #A4A3A3;
    font-weight: 400;
}

.footerMenu a:not(.footerMenu>li:last-of-type a):hover {
    color: #206AC9;
}

.footerMenu>li:last-of-type:not(.footerMenu>li:last-of-type>a) a:hover {
    background: #1c366a;
}

.copyright {
    margin-top: 10px;
    text-align: right;
    line-height: 24px;
    color: #A4A3A3;
    font-size: 14px;
}

.topNav {
    display: none;
    position: fixed;
    bottom: 10%;
    right: 2%;
    width: 60px;
    height: 60px;
    background: lightblue;
    color: #fff;
    text-align: center;
    border-radius: 10px;
}

.topNav i {
    font-size: 60px;
    color: lightcoral;
}

/* @keyframes run {
    0% {
        left: -600px;
    }
    100% {
        left: 0;
    }
} */